My Nokia Blog has received information from source called ”South” about Nokia Catwalk being launched May 15th 2013 in London. According to My Nokia Blog this same source has hinted about Nokia related stuff before and been right. So lets give ”South” slightly more credit than random guy spouting stuff in twitter.
As a reminder Catwalk is supposedly Lumia 920 replacement, not Lumia 920 successor. What we have heard, is that Catwalk takes Lumia 920 hardware and packages it to aluminium and thinner shell. There will likely be plenty of hardware differences, but still no big leap. It would make sense to launch the device in the first half of the year, when Nokia World around September will likely see new Nokia flagship being announced.
Source: My Nokia Blog
Some interesting comments from The Verge writer Tom Warren, who is claiming on twitter that Lumia 928 would be announced this month already. More interestingly he also says that Nokia Catwalk wont share camera or body with Lumia 928. AT&T might not get Catwalk either, rumors before have been pointing at T-Mobile getting Catwalk in US.