Wasn’t it just this time of year last year when we were getting all geared up for the first of many LTE announcements? Now with LTE here, Sierra Wireless is leading the proverbial pack with the announcement of some dual-carrier HSPA+ and LTE AirCards. Its latest two new mobile hotspots include the AirCard 754S and 753S. The former supports dual-carrier LTE, while the latter handles dual-carrier HSPA+, enabling the standard 5 simultaneous users to surf on either of the two network grades. The 753S is said to hit download rates as high as 42Mbps and upload rates near 5.76Mbps on the DC-HSPA+ network, while the 754S can reach up to 100Mbps download and 50Mbps up on the LTE network. Both devices are about the size of a deck of cards and an integrated LCD screen provides instant access to vital information, such as signal strength and battery life. We expect these devices to ship around Q2 2011 with no official word on which carriers will be claiming them for their very own.