In addition to new traditional PCs, Lenovo unveiled two new smartphones under its Vibe series. The Vibe Z2 and Vibe X2 are 64-bit mobiles ready for Android L. Both models will be available in China and select regions later this month.

First up is the Lenovo Vibe X2 which is the successor to the Vibe X. Lenovo's new flagship smartphone is 7.27mm thick and uses a layered design that uses a three color gradient evident when looking at the outside edges of the phone. The Vibe X2 features a large 5-inch 1920 x 1080 IPS display, 5MP webcam, and 13MP rear camera with flash.

The Vibe X2 is powered by a MediaTek MT6595M SoC, 2GB RAM, 32GB internal storage (no MicroSD expansion), and a 2,300mAh battery. The phone will come in dual and single SIM variants depending on the country. The MediaTek MT6595M "True8Core" processor features eight ARM cores in a big.LITTLE configuration with a maximum clockspeed of 2GHz on the four Cortex A17 cores and 1.5GHz on the four low power Cortex A7 cores. The SoC also features a 16MP image signal processor, video encoding hardware (for recording up to 1080p60), and a PowerVR G6200 GPU clocked at 450MHz.

In all, the Vibe X2 should perform noticeably better than last year's Vibe X thanks to the updated SoC with faster GPU. Moving to the big.LITTLE setup should also net users better battery life, which is always a good thing. For even more battery life though, Lenovo is offering up clip-on attachments – called Lenovo Xtensions – that include an extra battery and a version with a larger speaker.

While the hardware is ready to run Android L, the phone will ship with Android 4.4 KitKat along with Lenovo's Vibe UI 2.0.

The flagship Vibe X2 will be available later this month in China starting at $399 USD.

Lenovo is also releasing the Vibe Z2 which is a stylish metal unibody design with a brushed metal finish. The phone is 7.8mm thick and weighs 155 grams. The front of the Vibe Z2 is dominated by a 5.5-inch 1920×1080 display. An 8MP front camera sits above the display and uses an optional guesture-based shutter that can be triggered by smiling, blinking, or making a "V" sign with your hands. According to Lenovo, the Vibe Z has "mastered the art of the selfie." On the backside of the smartphone sits a 13MP camera with a Sony Exmor BSI (backside illumination) sensor and optical image stabilization which is nice to see on a smartphone.

Inside the Vibe Z2, Lenovo is using a Qualcomm Snapdragon 401 SoC, 2GB RAM, 32GB internal storage, and a 3,000mAh battery. The phone supports Dual SIM cards as well as LTE, HSPA+, WiFi, and Bluetooth networks. The Snapdragon 401 is a recent Qualcomm chip that can be clocked up to 1.2GHz with a Adreno 305 GPU clocked at up to 450MHz (Lenovo did not give specific clockspeeds, but those are the speeds that the 401 is rated at).

The Vibe Z2 will be available in China and other regions where Lenovo has a smartphone presence later this month starting at $429 USD.