Just got the following from ADC Books!

Edited by Angela Gardner (a long-standing member of the Tolkien Society) this book describes the childhood adventures of Hilary and JRR Tolkien. Hilary was JRR Tolkien’s younger brother and this book uses Hilary’s own words from recently discovered notebooks and previously unpublished letters between the brothers. Illustrated in colour
by Jef Murray. 80 pages, Hardback with dustjacket, available from end January.
There is an International Launch event on Friday 30th January 2009 at 19.00 hrs in the Crown, Market Square, Stony Stratford, UK, but it is a limited ticket event.
The book is available to buy direct from the publisher ADC Books www.adcbooks.co.uk through ABE Books www.abe.com.

ALSO, A signed and numbered edition will be published in April 2009 – Details as for the standard hardback edition, but this edition is limited to 100 numbered copies and will be signed by Angela Gardner, Jef Murray and Chris Tolkien (Hilary’s Grandson not CJRT). Price £50.00. Advance order direct from ADC Books.

This would be quite the interesting look at Tolkien’s early years.  Can’t wait to get a copy!