After much (very much) speculation Google has finally announced their new software for cell phones:

Google has unveiled software it hopes will power a variety of future mobile phones and boost the web on the move.
The software could lead to cheaper phones as it is designed to speed up the process of making mobile services.
The firm is working with four mobile manufacturers – Samsung, HTC, Motorola and LG – but a Google branded phone was not announced.
The first phones using the so-called Google “software stack” will be available in the second half of 2008.
“This is going to bring the internet into cell phones in a very cool way,” Andy Rubin, Google’s director of mobile platforms, told the Associated Press news agency.