Widgets: Image: Add missing if statement brackets.
Force deletion of jetpack_register option.

Under some specific server configurations the registration process was failing with a missing_secrets Error.
+ Add a pre_update_jetpack_option action to Jetpack_Options::update_option
Publicize: Fix the ability to mark posts as not publicizable with wpas_submit_post? filter.
Multisite: Remove extranneous comment
Correct URL to avoid a 404 of the loading spinner
Multisite: Hide module control settings for 2.9 release
Multisite: Fixed issue where sites would not connect from Network Admin > Jetpack > Sites

There were a few instances where clicking connect would not allow a connection. The Jetpack_Network::jetpack_sites_list()
would not run at all. This method was hooked to init. Switching to the admin_init hook seems to have resolved the issue.
Remove div as it is not used.
Remove module auto-activation toggles from 2.9

Remove the toggles for 2.9, re-evaluate how they're done and added for
a 3.0 release. They don't feel quite right yet.
Use wp_safe_redirect, not wp_redirect.
use submit_button(), don't write your own.
New layout for image based related posts
Multisite: Adding i18n to settings view template
More filters to make customizing Related Posts easier
Overflowing text fix
Minor spelling change in inline docs
Let's make sure we're not loading a wpcom asset unless the user has connected their account.
Remove unneccessary chunk of code
Updating @since version numbers in class.jetpack-network.php

Version was mostly 2.5 as that was when the Multisite code was originally ready for release.
Since the actual release version will be with 2.9 the numbers have been updated to reflect.
Open Graph: add Facebook Meta Tags to the conflicting plugins