Ahead of its hyped Mobile World Congress press conference to mark its debut into the modern smartphone market, two more Acer devices have been leaked.

As well as the E-Ten Glofiish DX900 rebadge that we brought you news of from a UK retailer's pre-order page, the new DX650 and X960 have now been revealed.

The DX650 is a Windows Mobile-based dual-sided device with a 2.8-inch QVGA touchscreen on one side with a 1.2-inch OLED display, plus numerical keypad, on the other.

Other specs for the dual display device include HSDPA, GPS, microSD, 802.11b/g Wi-Fi, and Bluetooth.

The X960 offers a 2.8-inch 640 x 480 pixel display with HSDPA, Wi-Fi, GPS, microSD, and a 3.2-megapixel camera with flash.

It's not known if this is all the smartphones Acer has up its sleeve for next week's event, but Pocket-lint will be attending so will bring you more from the show.