=> FDA First-Time Generic Drug Approvals
http://www.fda.gov/Drugs/DevelopmentApprovalProcess/HowDrugsareDevelopedandApproved/DrugandBiologicApprovalReports/ANDAGenericDrugApprovals/
Also, some of the Pharmacy Benefit Managers (PBMs) publish this information as well. Check out.
=> Patent expiration and First Time Generics: https://www.prescriptionsolutions.com/RxsolHcpWeb/news/rxnews.html?type=19
=> Estimated Dates of Possible First Time Generic/RX-to-OTC Market Entry: http://www.medcohealth.com/art/corporate/anticipatedfirsttime_generics.pdf