Hi Klaus,
been doing some reading and apparently the new shiz is Dyneema's SK78. Google 'Dyneema sk78'
and in looking I did find an IEEE paper, reporting on analysis of various yarns and their creep, including data on sk78. (couldn't access the paper, have to be signed in to download the PDF.)
DSM Dyneema doesn't seem to publish data. All I found at the DSM website was very pretty advertising with slick photos.