TetherBerry let us know they have rebranded as just Tether since they are expanding beyond the BlackBerry OS. They have just released a new version adding Bluetooth support. The cool part is that Tether has also been accepted into the App World which means that RIM did not block them.
Tether also put out a screenshot showing that they are 147% faster downloading than using native IP modem and 294% faster in uploads. You can see their proof to the right. Pretty impressive yet I never liked the startup process which they will hopefully simplify.
On a side note Tether is 50% off ($19.95) today only compared to the regular price of $39.95.