Generally, products are available in 5 years, insofar as there is no alternative suggested or the product has not been flagged as a phase-out product.
This information can not be answered in general. The independence of the product and the number of these values are very different. Packaging for automated processing as SMD Reals is referenced in the product data sheets and described in detail.
The delivery times can be discovered by checking the section Stock Check Distributor in real-time. Basically, products, which are labeled with "A=regularly ordered", are available in the shortest time.