Following the earlier rumour of the Sony Alpha 500 DSLR, www.photographybay.com has spotted a leak on the canadian Sony Style website.
Excerpt from the photography.com site.
The Sony A500 and A550 model names appear in the SonyStyle.ca product registration area from a prepopulated dropdown list. Four separate product names appear:
It would appear that these models represent two body-only models and two kit models.
If it is true, sonystyle.ca has removed that link.