You can find out about these things by checking eBay's General Announcement Board:
http://www2.ebay.com/aw/marketing.shtml

If you're lonely, you can sign-up for eBays new daily email of latest eBay news. Just click the above link. As eBay put it:

" Would you like to receive important eBay news in your email? Join the General Announcements User Group, and each day you will receive a single email with that day's news. It's a great way to stay current on new features, special promotions, upcoming workshops, and other information."

Robert