This is not exactly news but I just noticed this on the Silverprint website, www.silverprint.co.uk

Prices are not posted unfortunately but I did enquire about some sizes and I'll post again if I get a response:

Ilford Ultra-Large Film, '08 Campaign

Harman Technology are once again producing runs of special sizes in sheet films, with a choice of FP4 or HP5. As last year, orders must be placed with us by 30'th of June, and would be shipped by Friday August 8'th, so we would expect to have the orders available by the week commencing August 11'th.

1151567 10" x 4" 1151578
1142118 5" x 12" 1142093
1678316 6.5" x 8.5" 1142158
1142129 7" x 11" 1142107
1714937 7" x 17" 1707043
1791943 8" x 20" 1786024
1678334 10" x 12" 1796052
1714928 11" x 14" 1743225
1714946 12" x 20" 1707052
1142130 14" x 17" 1900589
1904558 16" x 20" 1871788
1142149 20" x 24" 1721124

The only proviso is that Harman may opt not to make a particular film/size if there are insufficient orders to produce the item viably.
Phil