This reached us from the Petrucci Library:
The IMSLP/PML archive passed the count of 250,000 free online scores on Saturday evening (last week). It marks a fairly important milestone for us. We also wish to take the opportunity to thank all the MLA members and partner libraries like Sibley, University of Louisville, Gaylord Library, the Danish Royal Library, and the BNF-Gallica and all others whose assistance and kind help have made it possible. Onward to half a million!