Yes, Lenovo A6000 Plus supports 4G and Lenovo A6000 Plus supports the same 4G bands as the A6000, i.e., FDD 800MHz / 1800MHz / 2100MHz / 2600MHz (Band 1, 3, 7, 20), and TDD 2300MHz (Band 40).
Well, as has been common with almost all the newer smartphones being launched of late, you will get 4G/LTE support. The smartphone sports the 4G bands that are operational (or planned for operations) in India. It is one of the affordable smartphones offering 4G connectivity.
That being said, almost every phone unless the device specifically mentions is going to support 4G. Devices with lack of touch support and basic feature are likely to miss the 4G support in future. However modern touch based smartphones are likely to have 4G. Just do check the frequency support just in case if you wish to import it from other country. Because frequency band support from other country may not be the same in india.
Yes. Lenovo A6000 Plus does support 4G. In fact, I would say that its one of the best value for money and low priced smartphone supporting 4G. Check out Lenovo A6000 Plus on Flipkart