ESRI has announced the release of ArcGIS 10 Service Pack 4. The new service pack is now available for download from ESRI’s patches and Service Packs download site. Download and installation of the new service pack is straightforward, and the software update runs seamlessly.
As far as OpenLM is concerned, Service Pack 4 does not incorporate fixes to the ArcGIS License Manager. Hence, transition to the new Service Pack should be transparent to OpenLM as a monitoring tool of floating licenses.
Please note that previous Service packs have included fixes to the ArcGIS License Manager. Here is a full list of the issues that were addressed and solved in ArcGIS 10 Service Pack 4, as well as in previous Service Packs.