From available evidence, it appears that India will deploy boosted fission warheads on missiles like Agni-5. It confirms that the thermonuclear devise tested on the first day of Pokhran II failed. The boosted fission trigger worked but couldn't ignite the paired fusion bomb.
The Indian nuclear scientific establishment has its own explanation for the low yield of the thermonuclear device. It has never satisfied the world. You can take the attitude that it doesn't matter what the world thinks. In other walks of life, that may work. But not when it comes to deterrent weapons.
Deterrent weapons not only have to be repeatedly tested for perfection. But they must satisfy the rest of the world. Only from world satisfaction comes credibility for a weapon system. If a deterrent is not credible, it is not worth having, and positively dangerous to flaunt.
It is possible that India has built a viable thermonuclear device after the Pokhran II fizzle. But this or a future Indian government will have a hard time testing it, especially as it will have a bearing on the Indo-US nuclear deal and the uranium fuel and reactor contracts flowing from it. Sooner or later, however, India has to overcome the obstacle and test -- and the sooner the better.
The Agni-5 test has produced little protest from major powers, which means there is greater reconciliation to India's military nuclear status. That should give India the creative opportunity and space to test a thermonuclear weapon. To stress, the sooner it is done, the better.
Boosted fission warheads that Agni-5 and longer range missiles are expected to carry have the bang, so to speak. But thermonuclear devices have more bang for the buck. With far better yield-to-weight ratios than fission or boosted-fission devices, smaller and lighter fusion warheads would cause vast destruction at greater distances. Which is where, therefore, Indian weapons' designs and tests must head, if the country must be counted as a serious weapons' power.