Here is one optimistic news about the ongoing research to find a cure for hbv.
"Tavis, who is professor of molecular microbiology and immunology at Saint Louis University, says his team has built a warhead that will kill the virus; now, it's time to design a cruise missile that will deliver the drug."
http://www.eurekalert.org/pub_releases/2015-12/slu-ngs121415.php