Title: MacBook
Content:  The MacBook Pro is Apple's higher-end notebook available in both 13-inch and 16-inch configurations. The current generation 13-inch MacBook Pro was introduced in October 2018. It features a touch-sensitive OLED display strip located in place of the function keys, a Touch ID sensor integrated with the power button, and four USB-C ports that also serve as Thunderbolt 3 ports. The 13-inch model was also available in a less expensive configuration with conventional function keys and only two USB-C/Thunderbolt 3 ports, but since July 2019, the base MacBook Pro model has the Touch Bar as well as quad-core processors, similar to the higher-end models, although it still has 
Title: MacBook Pro
Content:  Apple's Worldwide Developers Conference (WWDC) on June 8, 2009, it was announced that the 13-inch unibody MacBook would be upgraded and re-branded as a MacBook Pro, leaving only the white polycarbonate MacBook in the MacBook line. It was also announced that the entire MacBook Pro line would use the non-user-removable battery first introduced in the 17-inch MacBook Pro. The updated MacBook Pro 13- and the 15-inch would each have up to a claimed 7 hours of battery life, while the 17-inch would keep its 8-hour capacity. Some sources even reported up to eight hours of battery life for the 13- and 15-inch MacBook Pro computers during casual use, while others 
Title: MacBook Pro
Content:  the line. On July 9, 2019, Apple updated the 13-inch model with two Thunderbolt ports with newer quad-core 8th-generation processors and Intel Iris Plus graphics, True Tone display technology, and replaced the function keys with the Touch Bar. macOS Catalina added support for Dolby Atmos, Dolby Vision, and HDR10 on 2018 and newer models. macOS Catalina 10.15.2 added support for 6016x3384 output on 15-inch 2018 and newer models to run the Pro Display XDR at full resolution. The 2019 MacBook Pro was the final model that could run macOS Mojave 10.14, the final MacOS version that can run 32-bit applications such as Microsoft Office for Mac 2011.
Title: MacBook Pro
Content:  13-inch version on October 23, 2012 with specifications similar but slightly inferior to the 15-inch version's, such as less powerful processors. The new models omit Ethernet and FireWire 800 ports, though Apple offers Thunderbolt adapters for both interfaces. They also omit a SuperDrive, making the 15-inch model Apple's first professional notebook since the PowerBook 2400c to ship without a built-in optical drive. Instead of a hard disk drive, the new models ship with a solid state drive housed in a proprietary flash module design rather than a 2.5-inch notebook drive. Apple also claims improved speakers and microphones and a new system for cooling 
Title: MacBook Pro
Content:  The MacBook Pro is a line of Macintosh notebook computers introduced in January 2006 by Apple Inc. It is the higher-end model of the MacBook family, sitting above the consumer-focused MacBook Air, and is currently sold with 13-inch, 14-inch, and 16-inch screens. All current models of the MacBook Pro use variants of the Apple-designed M1 system on a chip. The first-generation MacBook Pro used the design of the PowerBook G4, but replaced the PowerPC G4 chips with Intel Core processors, added a webcam, and introduced the MagSafe power connector. The 15-inch model was introduced in January 2006; the 17-inch model in April. Later revisions added Intel Core 2 Duo processors and LED-backlit displays. The second-generation model debuted in October 2008 in 13- and 15-inch variants, with a 17-inch 
Title: MacBook Air (Intel-based)
Content:  considerably bulkier. Apple released an entry-level version of the 13-inch MacBook Pro on October 27, 2016, which was specifically targeted towards MacBook Air users. A Retina MacBook Air was released in late 2018. The 11.6-inch MacBook Air, introduced in October 2010, is only slightly larger and heavier (when closed) than the iPad 2. The 11.6-inch Air has been regarded as thin and light compared to other ultraportables, such as the Sony VAIO Z and the 11-inch Samsung Series 9. As of 2013, several ultrabooks such as the Sony VAIO Pro have managed smaller dimensions than the MacBook Air by using carbon fiber construction.
Title: MacBook Pro
Content:  iOS 6 at the Worldwide Developers Conference (WWDC) in San Francisco. The new MacBook Pro models were updated with Ivy Bridge processors and USB 3.0 ports, and the default RAM on premium models was increased to 8 GB. Following this announcement, the 17-inch model was discontinued. After a media event on October 22, 2013, Apple discontinued all second-generation MacBook Pro computers except for the entry-level 2.5 GHz 13-inch model. Apple discontinued the 13-inch second-generation MacBook Pro on October 27, 2016. Prior to its discontinuation it was Apple's only product to still include an optical drive and a FireWire port, and only notebook with a hard disk drive and Ethernet port.
Title: MacBook Pro
Content:  Apple announced a new 14-inch MacBook Pro, replacing the high-end 13-inch Intel MacBook Pro, and a redesigned 16-inch MacBook Pro during an online event on October 18, 2021. They are equipped with the new Apple Silicon chips, M1 Pro and M1 Max, Apple's second ARM-based systems on a chip and their first professional-focused chips. This release addressed many criticisms of the previous generation by reintroducing hard function keys in place of the Touch Bar, an HDMI 2.0 port, a SDXC reader and MagSafe charging. Other additions include a Liquid Retina XDR display with thinner bezels and an iPhone-like notch, ProMotion supporting 120 Hz variable refresh rate, a 1080p webcam, Wi-Fi 6, 3 Thunderbolt 4 ports, and a six-speaker sound system supporting Dolby Atmos. The M1 Pro chip supports up to two external displays, both at 6K resolution, while the M1 Max chip supports up to four displays: three at 6K resolution, and one at 4K resolution. The 16-inch version is bundled with a 140 W GaN power supply that supports USB-C Power Delivery 3.1, though only MagSafe supports full-speed charging as the machine's USB-C ports are limited to 100 W.
Title: MacBook Pro
Content:  2667 MHz DDR4 memory, and up to 8 TB of SSD storage. It includes better speakers, a better three-microphone array, and a 100 Wh battery, the largest that can be easily carried onto a commercial airliner under U.S. Transportation Security Administration rules. On May 4, 2020, Apple announced an updated 13-inch model with the Magic Keyboard. The four Thunderbolt port version comes with Ice Lake processors, updated graphics, up to 32 GB of memory and 4 TB of storage, and supports 6K output to run the Pro Display XDR. The two Thunderbolt port version has the same Coffee Lake processors, graphics, and maximum storage and memory as the 2019 two Thunderbolt port models. The 2020 13-inch models also gain 0.02 inches (0.6 mm) in thickness over the 2019 models.
Title: MacBook Air (Intel-based)
Content:  On October 20, 2010, Apple released a redesigned 13.3-inch model with a tapered enclosure, higher screen resolution, improved battery, a second USB port, stereo speakers, and standard solid state storage. An 11.6-inch model was introduced, offering reduced cost, weight, battery life, and performance relative to the 13.3-inch model, but better performance than typical netbooks of the time. Both 11-inch and 13-inch models had an analog audio output/headphone minijack supporting Apple earbuds with a microphone. The 13-inch model received a SDXC-capable SD Card slot. On July 20, 2011, Apple released updated models, which also became Apple's entry-level notebooks due to lowered prices and the discontinuation of the white MacBook around the same 

Question: when did macbook pro 13 inch come out?
Answer: October 2008.
June 8, 2009.