I had a feeling Nintendo would do this. I mentioned before that I didn't think Nintendo was going to release Gameboy 2 (or anything like that) with the DS on the market, or that a gameboy 2 didn't exsist at all. Well, now there's a few names that it looks like nintendo has trademarked that have GB in the title.
http://www.gamasutra.com/php-bin/news_index.php?story=3885
Nintendo Trademarks New DS Names
In an odd case of synchronicity, Nintendo today trademarked a number of acronyms for its Nintendo DS console. Like the Xbox names also leaked today, make for fairly confusing reading:
DGB
EGB
GBD
GBE
GBN
GBY
TGB
WGB
XGB
Since each name contains the letters "GB", it seems fair to assume that the company is planning to brand the new console (whose Nintendo "DS" moniker was only intended as a codename) with the "Game Boy" name. Beyond that, we can only guess the meaning of these acronyms.
http://www.gamasutra.com/php-bin/news_index.php?story=3885