The VisualEditor was updated as part of the wider MediaWiki 1.21wmf5 branch deployment on Monday 26 November.
In two weeks since 1.21wmf4, the team have spent their time mostly working on finalising the code and preparing for its deployment in December as a test for users.
A lot of work went into the 'Data Model' component that converts between the information that Parsoid gives us and a structure that the code can edit. This now supports HTML entities (so "ô", "ô", and "ô" do not get switched when users don't expect it - 42118), HTML comments (so they don't get accidentally removed - 42124; viewing and editing them is not yet supported), better handling for content that we don't yet recognise (42119), fixing a bug with our integration with Parsoid (42121), and supporting in production the "Change Markers" code that was worked on last iteration (41947).
In the integration work, we removed the "Feedback" link as this would not work well with the code being deployed to multiple wikis (41722) and unfortunately had to add Internet Explorer temporarily to the "blacklist" of browsers that the VisualEditor will not support for December, due to a number of critical issues that the team does not have time to fix (42335) - post-December, the team will work to find a way around the various bugs and inconsistencies in Internet Explorer.
We fixed bugs on handling "alien nodes" (items of content that we don't have a specific handler for yet, like templates), such as the floated alien-covering "phantoms" for selection purposes appearing wrongly in Firefox (42177) and them not appearing at all for items that floated due to a class in Chrome 42134). There was also some nasty bugs that we fixed, including when editing around inline (mid-paragraph) alien nodes (42212) and the data model and the display getting out of sync sometimes when cutting-and-pasting (42219).
Finally, a great deal of work was done to overhaul the link inspector's code and quash a large number of minor bugs with it, such as wrongly replacing links's spaces with underscores (42140).
A complete list of individual code commits is available in the 1.21/wmf5 changelog, and all Bugzilla bugs closed in this period on Bugzilla's list.