Its predecessor, the K3 Note comes with a Full HD (1920×1080) display, so it’s likely that the company is perhaps talking about an upgraded display resolution (Quad HD maybe?).
But since this is just a teaser for the time being, it’s tough to read too much into it. It’s just as likely that Lenovo is talking about a different display tech such as AMOLED instead of LCD or an unbreakable display as seen in moto phones(that would be nice)
Here’s what the tweet says “When is a display more than just a sum of its pixels? Get ready to thrill your senses with the K4 Note#KillerNote2016.”
As for the other features of the handset, it has been mentioned already that it would pack 3GB of RAM, a fingerprint scanner on the back and NFC (near-field communication) capabilities for wireless payments and close proximity data transfer.
Considering that this is a successor to the K3 Note, we can expect the pricing to be around the Rs 10,000 mark.