The new desktop Hosted Web App is built using Microsoft's Project Westminster app bridge, and appears to simply be a wrapper for the site itself.
That means it doesn't appear to come with push notifications, and there seems to be no Cortana integration either. However, there does seem to be fairly limited Live Tile support.
The app's tile will show you random images of specific products, but strangely, won't take you to the product page once you click on it.
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Alongside the launch of this new, fairly limited, desktop offering comes the new, similarly sparse, Windows Mobile app.
The 'Amazon' app for mobile, again, appears to be a Hosted Web App, and comes with no splash screen and the same Live Tile functionality as the desktop version.
This latest mobile software is not an update to the 'Amazon App' for Windows Phone that was shuttered earlier this week, but is part of the Windows 8 app listing, which was kept live.
For now, it seems Windows Mobile users at least have a website wrapper to launch straight from their home screens in lieu of a fully-functioning app.
The app is available here for those that want to make online shopping incrementally easier.
Although the description states "This app is intended for use on Win 10 PC devices", it clearly indicates the software will work on Windows 8.1 and Windows 10 Mobile too.
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Have you tried the new app? Let us know what you think in the comments.