Filed under: CellphonesThe Gphone rumors have been heating up lately, and things seems like they're about to come to a boil. The Wall Street Journal, not generally known for wild rumor-mongering, is reporting that Google is in "advanced talks" with Verizon and Sprint and has made "significant progress" with T-Mobile, with an announcement of some kind due within two weeks. The news sent Google stock past $700 today, although it's still not clear if Google is simply developing its own software or going all out and doing an entire handset. Either way, it looks