Complex sentence: POWER5 from IBM, introduced in 2004, is an evolution from POWER4 and bumps the PowerPC specification to v.2.01, and again to v.2.02 in 2005 with the POWER5 +.
Split into simpler sentences: POWER5 from IBM, introduced in 2004, was an evolution from POWER4. It bumped the PowerPC specification to v.2.01, and again to v.2.02 in 2005 with the POWER5 +.