Release info and more images of these two figures can be seen in this previous posting.
January 15th release, 2,900 Yen each (inclusive of tax).
Images are from Hobby Search.
On a related note, Revoltech announces two new Revo-Rama templates for you to download, targeted at three recently released items:
"Heated Battlefield" for No. 079 Date Masamune and No. 080 Sanada Yukimura
"AS Hangar" for No. 081 Arbalest
The ones for Sengoku Basara are just background images to pose Date Masamune and Sanada Yukimura, which doesn't require any folding work, but there's a bit of papercraft work for Arbalest. Interested fans should check it out.
Images are from Union Creative's official site.