This second volume of the Advanced Packaging Update includes an analysis of OSAT financials. A special section is devoted to the demand for large substrates and developments in glass core substrates. Alternatives such as RDL interposers are described. Substrate material shortages are discussed. Thermal interface material needs for large body size packages are analyzed and new TIM 1 developments are included. TechSearch International’s annual survey on substrate design rules is presented, with special coverage of suppliers of laminate flip chip BGA and CSP substrates worldwide. The design rules include body size, core thickness, via and pad diameter, minimum bump pitch supported, and substrate finish.