I caught this in USA Today this morning regarding the World Cup Swim Meet in Stockholm: "... New starting blocks, with an extra elevated part on the back, were introduced at the meet and Van der Burgh partly credited them for the new record.
"It helped me to come under 26 seconds. It feels incredible to be the first to have managed 26 seconds," he told Swedish television. ..." [Link]
From Yahoo/Eurosprot: "...The South African managed a time of 25.94sec seconds to shatter the previous best of 26.08 sec that he had set in Moscow on Saturday...." [Link]