The U.S. customers waiting for Samsung's Galaxy S2 can now rest assured that the ultra-thin Android phone will now be available this September.

And while customers prepare for the release of Galaxy S2 in the U.S., reports from IFA Germany revealed that Samsung is planning to unveil the Galaxy S2 LTE and Galaxy Tab 8.9 LTE version this week.

Galaxy S2 faces threat from upcoming LTE 4G enabled phones like Motorola Droid Bionic and HTC Holiday. The only caveat in Galaxy S2 strategy was that the LTE quotient was missing.

However, the announcement of the arrival of Galaxy S2 LTE changes the ball game entirely. The phone is touted to be the first LTE/GSM/WCDMA- multi-mode phone. The phone may possibly not arrive in the U.S. in the upcoming months, as most of the devices released at IFA are Europe bound.

The Galaxy S2 LTE is a larger cousin of Galaxy S2 both in terms of size and hardware specifications. The Galaxy S2 LTE sports a 4.5-inch Super AMOLED Plus display with 800x480 screen resolution. It is powered by a 1.5GHz dual-core processor and offers 16GB internal memory.  The phone is 0.37-inch thick and weighs 4.6oz. Galaxy S2 LTE will also feature an 8MP rear-facing and 2MP front-facing cameras. It is fitted with a Li-on 1850 mAh battery. The phone will come pre-loaded with Android Gingerbread.

The Galaxy S2 LTE features are similar to Samsung Celox 4G LTE which appeared in Korea early this month.

Galaxy S2 which is due to hit the U.S. in September rocks a 4.3-inch Super AMOLED display with 800x480 screen resolution, a 1.2GHz dual-core Orion processor and Li-lon 1650mAh battery. Galaxy S2 is super thin, at a mere 0.33 inches and weighs about 4 oz.

Although Samsung has not formally announced that the phone will be released in the U.S., Motorola and HTC have a lot to fear if the Galaxy S2 LTE arrives in the U.S later like the Galaxy S2. Currently Motorola's 4G LTE offering the Droid Bionic is expected to be launched in September and HTC's rumored phone HTC Vigor, an LTE phone due for Verizon's LTE network, which was spotted by Droid Life is also on the anvil.

Droid Bionic is rumored to sport a 4.5-inch display with 960x540 screen resolution. It is surmised that it will be powered by a TI OMAP4 1.2 GHz processor optimizing 1GB RAM. Droid Bionic is expected to feature Li-ion 1930 mAh battery and will feature an 8MP camera.

It is rumored that HTC Vigor will sport a 1.5GHz dual-core processor. The phone, which is touted to be a replacement for the HTC Thunderbolt, is expected to don a 4.3-inch display with 1280x720 screen resolution. Vigor is surmised to be fitted with an 8 MP camera. It will run on Android Gingerbread juice. Also it is expected to offer 1GB RAM, 16GB internal storage and is also surmised to incorporate Beats Electronics Technology - best known for the high-performance line of headphones backed by hip-hop artist /producer Dr. Dre.

The smartphone war is getting fiercer and with Apple iPhone 5 still due there are many more surprises due which leaves the customers in a dilemma to buy a new smartphone or wait for these superphones.