If anyone was wondering, all three Uncle Albert's Catalog Updates published in Pyramid Vol. 2 have been made available at no cost. The 2050 Catalog Update was previously a pay-per-view article.
Uncle Albert's 2048 Catalog Supplement: Sonic Cannon
http://www.sjgames.com/pyramid/sample.html?id=310
Uncle Albert's 2050 Catalog Supplement
http://www.sjgames.com/pyramid/sample.html?id=1586
Uncle Albert's 2051 Catalog Supplement
http://www.sjgames.com/pyramid/sample.html?id=2211