According to sources from various reports, it is confirmed that an update to the Acer Liquid (currently android 1.6) is scheduled for an early Q2 release in Singapore. In an earlier report by another site, it is stated that an update is scheduled from Acer France for the french market at end March.
So, users of the Acer Liquid, do stay tuned and wait for it to be pushed to your handset over the air. If you can’t wait, you can download the firmware and flash it in yourself (breaking all warranty).