"Great Western Glory" is the upcoming second book in The British Railway Stories. It is due to be released in 2014/15.
If there was one Big Four company that preferred 4-6-0 Ten Wheelers to 4-6-2 Pacific, it was the GWR of the UK. The book shall follow the exploits of 4000 Star Class Princess Alexandra, 4073 Castle Class Spitfire (formerly Clifford Castle) and 6000 King Class King George VI, three GWR 4-6-0 locomotives.
Hawk may also appear since he's also from the GWR.