Brunel v21r2 - released 5th December 2003
The table below list new features introduced in Brunel version v21r2, relative to version v21r1
| Subsystem | Item | Responsible | Status |
| Framework | Removed support for v256r0 geometry (not supported by OTDet v5r0 | M.Cattaneo | Brunel v21r2 |
| Event Model | New OTChannelID. Backwards incompatible | J.v.Tilburg, J.Nardulli | LHCbKernel v2r10 |
| ST | XmlDDDB geometry cleanup, affects IT detector element location | M.Needham | XmlDDDB v20r0, ITDet v1r7 |
| New tuning of clustering | M.Needham | ITAlgorithms v13r0. See talk of 19/11/03. | |
| Additional monitoring histograms | M.Nedham | ITCheckers v1r4 | |
| OT | New OT geometry (OTQuarters, final module layout). Backwards incompatible due to change in station,layer,module numbering | J.v.Tilburg, J.Nardulli | XmlDDDB v20r0, OTDet v5r0, OTAlgorithms v13r4, See talk of 19/11/03. |
| Rich | Further improvements to Rich geometry | C.Jones | RichDet v6r3, RichDetTools v3r3, RichRecBase v1r6, RichRecTools v2r5 |
| Tracking | Fixes to work with new OT geometry | M.Cattaneo | TrAssociators v3r7, LongTrack v1r9, Seeding v2r6, TrIntraPR v2r7, TrCheck v2r2 |
| Fix division by 0 for backward moving tracks (bug 1928) | J.v.Tilburg | TrCheck v232 | |
| Bug fix to TrStateP covariance matrix | J.V.Tilburg | TrEvent v12r2 |