Hoya sp. Sarawak GPS 10073 actually first flowered for me in May of 2015, but I held it back for a rainy day so to speak.  I occasionally will hold back a recently flowered new Hoya for use on this blog when I have had nothing new flowering for a long time.  Well I can hold it back no longer because it is now flowering profusely exactly one year after it flowered for the first time.