No, the 81xx, 88xx, 83xx series phones will be getting OS 5.0 which will have many improvements and the look of OS 4.6. It's expected to be released this summer.
What features will the 5.0 OS have? What differences will it have compared to the 4.5? I have never had to upgrade my OS as my pearl came with 4.5 I am a tad scared incase I brick my phone, any tips (of course I shall be following instructions from the blog on here!) Have any of you encountered problems whilst upgrading?