Specifications for the upcoming HTC Thunderbolt have purportedly leaked, with a German retailer listing the smartphone in their systems. According to the screenshot sent to HTCInside, the smartphone – which so far we’ve seen with Verizon branding for the US – will also be headed to German carriers O2, Deutsche Telekom and Vodafone, all of whom have fledgling LTE networks of their own.

As for the specs, the Thunderbolt is listed as having Qualcomm’s 1.2GHz MSM8960 dual-core processor, an 8-megapixel camera on the back and a 5-megapixel camera on the front for high-res video calls. There’s also WiFi b/g/n and supposedly microSDXC memory card support for up to 128GB cards. More specs below.

The supposed details of the HTC Thunderbolt are not confirmed, and so we should be taking them with the necessary pinch of salt, but if true this could definitely be the LTE phone to take on Tegra 2 challengers like the LG Optimus 2X.

Update: As we suggested, this isn’t necessarily all true. The MSM8960 supposedly found inside the Thunderbolt isn’t expected to arrive until 2012, Qualcomm has previously said. Either the chip has been misnamed on the spec sheet, or it’s a sign that this isn’t entirely legitimate.

• 4.3-inch display 16.78 million colors
• Android OS 2.3 Gingerbread
• Qualcomm MSM8960 dual-core processor 1.2 GHz
• 8-megapixel camera (primary)
• 5-megapixel camera (secondary)
• 1080p Full HD video recording and playback
• GSM / Quad Band | GPRS / EDGE / 3G / HSPA / LTE
• WLAN 802.11 b / g / n
• Kickstand
• Bluetooth
• 16GB Internal Memory | Expansion per 128GB microSDXC
• Battery 1800 mAh

[via BestBoyz]