Update of "Additional Tablets" by 'Abdu'l-Bahá; Permanency of URLs on bahai.org

1. Question from an individual (see reply below)

... There is a link at bahai.org/library/authoritative-texts/abdul-baha/additional-tablets-extracts-talks to "Download all Tablets, extracts and talks provided below in one document." However, this file does not actually include all of the Tablets. Do you plan to publish an updated PDF which includes those Tablets?

Also, are the works listed on that page expected to keep expanding? If so, is there any official naming or referencing for these Tablets so that they may be distinctly identifiable when mentioned on other websites? (In the past, bahai.org has allowed websites to change their original URLs, sometimes without redirects, so I fear the current URL might not be sufficient.) ...

2. Reply from the Universal House of Justice