T-Mobile USA's parent company, Deutsche Telekom, is expected to quell rumors that the carrier is for sale. The Wall Street Journal says the announcement will come next week. The rumors started earlier this summer but have not amounted to much.
T-Mobile USA is a distant fourth place for mobile carriers in the US, behind giants Cingular, Verizon and Sprint. But T-Mobile's rapid growth in the US has helped balance some ugly financials in Europe.
Upgrading the T-Mobile USA network for 3G remains a very expensive challenge that has yet to be fully explained.
UPDATE: it's official.