The document you linked to is at present not up to date, as it mentioned a pair of options for the CMS, one being based on a Saab 9LV system modified to incorporate an Aegis FCS, the other being an Aegis CMS. The document also mentioned that the selection of CMS will occur after the submission of tenders. This RFT was made in March 2017, with the Aegis CMS selected in October 2017.
As of January 2018, Defence is expecting construction to commence in 2020 in SA.
There's nothing out of ordinary about the statements in the RFT. If there's a more up to date document, please do provide the source.
There were two CMS options stated and one of them was indeed selected - "
a US Aegis Combat Management System based on the version currently being used in the Air Warfare Destroyers". The timing of the CMS selection was indeed after the submission of tenders. What exactly is the problem? What was presented in the RFT was exactly how it played out.
There's no doubt either as to the timing of construction - which is indeed 2020 and stated as such in the RFT. However, this will be a prototyping phase which will then lead on to full ship construction up to 24 months after this starts. The relevant RFT section is stated below:
3.4 Commencement of Construction in Adelaide in 2020
3.4.1 The Commonwealth requires the Project to achieve the Commonwealth's schedule requirements, including Commencement of Prototyping Activities in Adelaide in 2020.
3.4.2 The Commonwealth is seeking to prove ship production processes and workforce readiness through the Commencement of Prototyping Activities in Adelaide in 2020. This production system prototyping is expected to provide increased certainty that the shipyard facilities, production systems and processes, workforce and supply chain are fully capable prior to the Commencement of Ship Construction within 24 months of Commencement of Prototyping Activities. The prototyping activities also provide an opportunity for the parties to refine project and contract management activities, such as scheduling and cost estimation and reconciliation.
Edit: Rephrasing statements