The Flex 4 (called the Yoga 510 internationally) will be available in 14- and 15-inch configurations. It keeps the general Yoga aesthetic, the 1080p displays, the up-to Core i7, 8GB of RAM and 256GB SSD options, but its graphics cap out at an AMD Radeon R7 M460 GPU. It's scheduled for release this April at $599 for the 14-inch, or $699 for the 15-inch.
Lenovo's Miix 310 tablet.
For the super budget-conscious, Lenovo has the MIiix 310, a $229 convertible powered by an Intel Atom X5 8300 CPU with integrated graphics. It has a 10.1-inch "up to 1080p" display, "up to" 4GB of RAM, and "up to" 128GB eMMC storage. There'll also be a model with LTE support, but Lenovo's quiet on the price for that configuration. We suspect the exact pricing will become clearer closer to its release date in June.