As you know, Lenovo has announced a tablet called Tab 4 in an event at MWC, 2017. Now it is up for sale in US via Newegg.com and Amazon.com. Both the website have listed 8.0 inch variant as well as 10.1 inch model.
As far as pricing is concerned, the 8 inch model costs around $130 whereas bigger 10.1 is priced at $179.99 for US markets. If you are interested you can pre-order now as both these tablets are available for pre-orders. As for availability, the amazon listing confirmed that they will start shipping in within 2-5 weeks while Newegg says, the tablet will be released on June 30 if you pre-order this device.