This sounds like a great advancement, however an implementation in RDBMS products may be some way away yet - MSSQL uses 8KB pages by default, and I believe (without checking) that most other RDBMSes use at least 4KB. B+ tree index implementations on RDBMS products may be here to stay for a while yet unless these performance issues can be minimised, or unless there is a paradigm shift to use smaller pages - which would have a knock-on effect to query performance unrelated to indexes, such as number of page lookups, increased I/O for non-contiguous page reads...