1) Yes, inactive accounts will be purged. We're following the rules from
this news entry under "Purging inactive accounts". Yes, communities and identity accounts are included. Yes, the email has typoes in it but it's correct and trustworthy, except for the date it gives for purging (which is some time in the past). Yes, there will be a new
news entry before the big red button gets pushed.
2) Due to a bug, the HTML cleaner is cleaning external stylesheets to the point where some don't work anymore. That's filed at
LJSV-2055.
3) HTML cleaning CSS more strictly within the entry (similar to how it's stripped in comments) is actually not a bug, that's changed now too for security reasons, unfortunately.
4) Comments don't get exported to Twitter or Facebook anymore. Only entries are eligible for auto-posting now.
5) Speaking of Twitter, the Russian subjects thing will be fixed in r89. The problem with it not posting at all will be further investigated after that, though we suspect it may be a Twitter API issue.
I think that's all the new information I have to pass along.