While the HTC 8X is based on Windows Phone 8, the Desire SV is based on Android OS.
Currently no other popular online retailers are shipping the products, however it is likely to be available through physical and online retail stores in a couple of days.
Flipkart is currently taking pre-orders for the phones. It is offering a free Sandisk 16 GB memory card with Desire SV and ML 10 Bluetooth headset with HTC 8X on pre-order though the price quoted is slightly higher than Saholic.com. It has also promised to ship the phone this week itself.
The new HTC 8X features a 4.3-inch Super LCD 2 display with 720p HD native resolution. The display panel has been built using Corning Gorilla Glass 2 technology for strength and resistance from scratches. The phone is 10.12 mm thick. You can read the review of the phone here.
The HTC Windows Phone 8X has a dual-core 1.5 GHz Qualcomm Snapdragon S4 MSM8960 mobile processor and the Adreno 225 graphics. HTC has packed a 1 GB RAM and 16 GB on-board storage in the phone as well. There is no memory card slot though. The Windows Phone 8X has an 8 megapixel camera with LED Flash. There is also a 2 megapixel front facing camera which is said to be powerful enough for recording 1080p HD videos. The 8X has also the Beats Audio sound enhancements for best quality audio output with Beats Audio headphones and earphones.
On the other hand, the Desire SV is the flagship dual SIM phone from HTC and is currently the best dual SIM phone that you can buy in terms of specification. It comes with a 1 GHz dual core processor along with a 768 MB of RAM, 4.3 inch LCD 2 display, 4 GB internal storage expandable to 32 GB, it also has an 8 megapixel main camera which features an f/2.2 aperture and autofocus lens with LED flash for detail and accuracy in images even in low light conditions.
HTC Sailfish features a rear-mounted fingerprint sensor and USB-C port at the bottom.
However, in HTC India's website it is still listed as "Coming Soon".
HTC 10 was unveiled in April this year in Snapdragon 820 and Snapdragon 652 versions. But it is not clear which version coming to India.
The Desire 628 is the slightly toned down variant of the Desire 830.
Desire 628 looks similar to the Desire 830 but comes in a smaller form factor.
The One M9 Prime Camera Edition comes two different color options- Gunmetal Grey and Gold.
HTC Desire 830 features a 5.5-inch full HD (1920x1080 pixels) IPS display and is equipped with a 1.5 GHz Octa-Core MediaTek MT6753 processor.
HTC is said to be making two upcoming Nexus devices which will be powered by Android N operating system.
The HTC One S9 comes three different colour options- Gold, Silver, and Gunmetal Grey.
The Desire 828 2GB variant is currently available on Flipkart for Rs 18,990.