This is an announcement for the paper "Strong martingale type and uniform smoothness" by J\"org Wenzel. Abstract: We introduce stronger versions of the usual notions of martingale type p <= 2 and cotype q >= 2 of a Banach space X and show that these concepts are equivalent to uniform p-smoothness and q-convexity, respectively. All these are metric concepts, so they depend on the particular norm in X. These concepts allow us to get some more insight into the fine line between X being isomorphic to a uniformly p-smooth space or being uniformly p-smooth itself. Instead of looking at Banach spaces, we consider linear operators between Banach spaces right away. The situation of a Banach space X can be rediscovered from this by considering the identity map of X. Archive classification: Functional Analysis Mathematics Subject Classification: 46B04 (Primary); 46B20, 47A63 (Secondary) Remarks: 11 pages The source file(s), strong.arxiv.tex: 30219 bytes, is(are) stored in gzipped form as 0407482.gz with size 8kb. The corresponding postcript file has gzipped size 56kb. Submitted from: wenzel@minet.uni-jena.de The paper may be downloaded from the archive by web browser from URL http://front.math.ucdavis.edu/math.FA/0407482 or http://arXiv.org/abs/math.FA/0407482 or by email in unzipped form by transmitting an empty message with subject line uget 0407482 or in gzipped form by using subject line get 0407482 to: math@arXiv.org.