The phones in question are Sony Xperia XA2, Xperia XA2 Ultra and Xperia L2. US customers can buy them in four different colour variants (Black, Blue, Pink, and Silver). Best Buy retailer offers them for pre-order for $349.99, $449.99 and $249.99. All three phones should be released in the US tomorrow, on January 16th.
As for UK, Unlocked Mobile and Clove are the retailers that offer the aforementioned phones. While you can already pre-order Sony phones from them, these phones will only become available in retail by the end of the month. Retail prices of the phones they offer are £298, £378 and £198. Brits will also offer their Sony phones in more colour variants than the Americans.