Hi everyone,
For those of you who are reporting "missing subscribers", are you talking about the statistics on the Analyze tab (the first page you hit when you open your feed in the Control Panel), or the email subscriber list at the Publicize page?
I'm aware of some trouble with the feed stats, but all email subscribers should remain visible on the Publicize tab, under Email Subscriptions. The issue with the feed stats is being worked on, and only affects the numbers displayed to you. Like Ashley mentioned above, feeds are serving and email updates are being sent out as usual.
- Maks.