This is an announcement for the paper "On the closed subideals of $L(\ell_p\oplus\ell_q)$" by Thomas Schlumprecht. Abstract: In this paper we first review the known results about the closed subideals of the space of bounded operator on $\ell_p\oplus \ell_q$, $1<p<q<\infty$, and then construct several new ones. Archive classification: math.FA Mathematics Subject Classification: Primary: 47L20. Secondary: 47B10, 47B37 Remarks: To appear in Operators and Matrices Submitted from: schlump@math.tamu.edu The paper may be downloaded from the archive by web browser from URL http://front.math.ucdavis.edu/1105.3610 or http://arXiv.org/abs/1105.3610